Which of the following is a characteristic of all cancers?

A. Uncontrolled cell division
B. Metastasis
C. Rapid proliferation
D. Uncontrolled cell division and metastasis only
E. All of these are characterisitic of all cancers


D

Biology & Microbiology

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What structure in most ray-finned fish is responsible for buoyancy control?

a. Gas gland b. Blubber c. Squaline d. Swim bladder

Biology & Microbiology

What is the difference between a gene that is derepressed and one that is induced?

A. Genes that are derepressed are turned on because an inducer molecule is present. By comparison, a gene that is induced is turned on because a repressor protein is bound to the operator. B. There is no difference between a gene that is derepressed and one that is induced. C. A gene that is derepressed is turned on because a repressor protein is not bound without its cofactor. By comparison, a gene that is induced is turned on because an inducer molecule prevents binding of the repressor. D. A derepressed gene is turned off and an induced gene is activated to be expressed.

Biology & Microbiology

Which type of proteins is embedded in the cell membrane in both active transport and facilitated transport?

A. cytoskeletal B. structural C. targeted D. carrier

Biology & Microbiology

Sperm use ____ for their energy source

a. fructose b. glucose c. ions d. proteins e. prostate gland secretions

Biology & Microbiology